CN104801535A - Enriching and transformation ditch device of protection forest for removal of farmland heavy metals - Google Patents
Enriching and transformation ditch device of protection forest for removal of farmland heavy metals Download PDFInfo
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- CN104801535A CN104801535A CN201510240310.5A CN201510240310A CN104801535A CN 104801535 A CN104801535 A CN 104801535A CN 201510240310 A CN201510240310 A CN 201510240310A CN 104801535 A CN104801535 A CN 104801535A
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Abstract
The invention belongs to the technical field of in-situ removal of heavy metal pollution of farmland soil environments, and discloses an enriching and transformation ditch device of a protection forest for removal of farmland heavy metals. The enriching and transformation ditch device comprises blind pipes, a water collecting settlement pool ditch, an enriching and transformation island and forest trees, wherein the blind pipes are used for draining the soil spraying water; the enriching and transformation island is built by an enriching and transformation box; the enriching and transformation box sequentially comprises a soil bearing layer, a water permeating filtering layer and a filtering material layer from top to bottom. The enriching and transformation ditch device has the characteristics that the heavy metal pollution of the soil can be efficiently recovered in an in-situ way within the larger range, the heavy metal is enriched and transformed to a wood production terminal, and the problems of secondary pollution and food safety are solved; the advantages of land saving, water saving, energy saving, material saving and farmland sustained ecological growth maintaining are realized; the enriching and transformation ditch device is used as an all-in-one facility for the basic construction of farmland forest nets (islands) and irrigation farmlands, and is also used as an important device for realizing multiple functions, such as basic construction of the farmlands, improving of the small climate of the farmlands, and realizing a wood production base.
Description
Technical field
The invention belongs to the recovery technique field that original position removes heavy metal pollution of soil in farm environment, be specifically related to a kind of shelter-forest enrichment for removing heavy metals in farmland and transform ditch device.
Background technology
Because China belongs to the country of serious water shortage, in addition economic develop rapidly and population base increase, and industrial or agricultural working population quality is low not strict in enforcing the law or lack with supervision, make the surface water resources that originally lacks seriously polluted, more exacerbate shortage of water resources, become the country of contamination type lack of water, just become inevitable with the sewage irrigation containing heavy metal.
According to Ministry of Agriculture's soil environment monitoring investigation display, in China's 24 provinces and cities' development faster 320 emphasis contaminated areas, the agricultural cultivation area that land for growing field crops crop pollution exceeds standard accounts for 20% of the monitoring and surveying gross area; Wherein the agricultural output that exceeds standard of content of beary metal and area account for pollutant and to exceed standard more than 80% of agricultural product total amount and the gross area, and especially Pb, Cd, Hg, Cu and combined pollution thereof are the most outstanding.The content overproof of irrigating region Cadmium in Soil, nickel, zinc and copper, average content is respectively 65.31mgkg
-1, 1196.64mgkg
-1, 2799.25mgkg
-1and 145.78mgkg
-1, be 108.85,19.94,9.33 and 1.46 times of national soil environment secondary standard respectively.In wheat, rice grain, cadmium pollution is the most serious, and wheat average content is 2.55mgkg
-1, be 25.5 times of national food hygienic standard, nickel, chromium and Zn content are 12.98,6.12 and 1.32 times of national food hygienic standard respectively.For guaranteeing the red line that country ploughs and Food Quality and Safety, this just forces us to study the recovery technique of heavy metal pollution of soil.
At present, the recovery technique of heavy metal pollution of soil is according to the difference of employing method and principle, usually two kinds are mainly contained to the governance way of heavy metal-polluted soil: 1. change the existing forms of heavy metal in soil, make it fix, thus reduce its animal migration in the environment and the utilizability of biology, but in large-scale natural changeable environment factor, the heavy metal-polluted soil being changed form as long as this also exists, be difficult to guarantee without backward reaction, still there is the potential threat of bounce-back; 2. removal heavy metal from soil.Although from soil the method for removal heavy metal and recovery technique each has something to recommend him, and periodically can solve existing local soil heavy metal pollution problem, but considering from continuable long-range and large-area in-situ immobilization angle, there is again many deficiencies and limitation in them.
Summary of the invention
An object of the present invention is for solving above-mentioned problems of the prior art, provides a kind of shelter-forest enrichment for the sustainable removal heavy metals in farmland of large area original position to transform ditch device.
A kind of shelter-forest enrichment for removing heavy metals in farmland provided by the invention transforms ditch device, comprise blind pipe, charge for remittance sedimentation basin ditch, enrichment transforms island and forest, described blind pipe is meshy arrangement in farmland, the sewage of its discharge outlet enters the described charge for remittance sedimentation basin ditch of farmland surrounding respectively, described charge for remittance sedimentation basin ditch is the gutter of digging out around polluted agricultural land edge, described enrichment conversion island is transformed case single row or multiple rows by enrichment and is listed in charge for remittance sedimentation basin ditch central authorities and forms, described enrichment transforms case and is divided into soil bearing course successively from top to bottom, permeable filtering layer and filter material layer, described forest comprises fallen leaves and evergreen water-fast wet arbor.
Say further, it is trapezoidal cabinet that described enrichment transforms case, and described trapezoidal cabinet band top is also bottomless, be trapezoidal inclined plane to water side, chain junction is vertical plane, the large mouth down that described trapezoidal cabinet is bottomless, upward, the top of described trapezoidal cabinet is provided with kind of a plant hole to the osculum on band top.
Say further, described enrichment transforms case and is made up of corrosion-resistant engineering plastics, rubber or resin material, all arranges permeable hole in its surrounding simultaneously.
Say further, described forest adopts fallen leaves and the arbor of evergreen mixed friendship, includes but are not limited to yew, wet-land pine tree, bald cypress, metasequoia, Chi Shan, Manchurian ash, white willow, steamed bun willow, weeping willow, China tree, leaflet Chinese wax, Chinese tallow tree, Chinese ash, fragrant camphor tree, Bischofia javanica Bl, mosquito mother, Mao Shu.
Say further, the vulcanization bed slag of described filter material layer manager selectionization modification, pottery, watt, porcelain, coal-fired solid impurity particle the like waste, but be not limited only to this class and consider material.
Say further, described permeable filtering layer selects seepy material to make, and includes but are not limited to permeable non-woven fabrics.
Beneficial effect of the present invention is: the present invention can provide a kind of knowledge nature, and the physics and chemistry of simulating nature and biological process, by means of natural force, implement the sustainable method of comprehensive in-situ immobilization on a large scale.This device being assembled in northern gutter or southern low-lying land, forming protection forest net or woods island, without the need to separately accounting for soil.Can the heavy metal pollution of efficient in-situ immobilization soil in farmland on a large scale, do not produce secondary pollution and food-safety problem, have again save land, economize on water, the advantage of energy-conservation, material-saving and farmland productivity, but also can be used as the integrated facility of farm field and forest network (island), irrigation and drainage farmland capital construction, permanent maintenance food and ecological safety, sustainable improvement agricultural microclimate, becomes important device and the timber production base of farmland capital construction and pluralistic function.
Accompanying drawing explanation
Figure 1 shows that shelter-forest enrichment of the present invention transforms ditch device profile.
Figure 2 shows that shelter-forest enrichment of the present invention transforms case apparatus plant isosceles triangle layout drawing.
In figure: 1-blind pipe, 2-farmland, 3-enrichment transform case, the permeable filtering layer of 4-, 5-filter material layer, 6-soil bearing course, 7-soil, 8-permeable hole, 9-charge for remittance sedimentation basin ditch, 10-kind plant hole.
Detailed description of the invention
A kind of shelter-forest enrichment for removing heavy metals in farmland provided by the invention transforms ditch device, comprise blind pipe 1, charge for remittance sedimentation basin ditch 9, enrichment transforms island and forest, described blind pipe 1 is meshy arrangement in farmland 2, the sewage of its discharge outlet enters the described charge for remittance sedimentation basin ditch 9 of farmland 2 surrounding respectively, described charge for remittance sedimentation basin ditch 9 is the gutters of digging out around polluted agricultural land 2 edge, described enrichment conversion island is transformed case 3 single row or multiple rows by enrichment and is listed in charge for remittance sedimentation basin ditch 9 central authorities and forms, described enrichment transforms case 3 and is divided into soil bearing course 6 successively from top to bottom, permeable filtering layer 4 and filter material layer 5, described forest comprises fallen leaves and evergreen water-fast wet arbor.
Say further, it is trapezoidal cabinet that described enrichment transforms case 3, and described trapezoidal cabinet band top is also bottomless, be trapezoidal inclined plane to water side, chain junction is vertical plane, the large mouth down that described trapezoidal cabinet is bottomless, upward, the top of described trapezoidal cabinet is provided with kind of plant hole 10 to the osculum on band top.
Say further, described enrichment transforms case 3 and is made up of corrosion-resistant engineering plastics, rubber or resin material, all arranges permeable hole 8 in its surrounding simultaneously.
Say further, described forest adopts fallen leaves and the arbor of evergreen mixed friendship, includes but are not limited to yew, wet-land pine tree, bald cypress, metasequoia, Chi Shan, Manchurian ash, white willow, steamed bun willow, weeping willow, China tree, leaflet Chinese wax, Chinese tallow tree, Chinese ash, fragrant camphor tree, Bischofia javanica Bl, mosquito mother, Mao Shu.
Say further, the vulcanization bed slag of described filter material layer 5 manager selectionization modification, pottery, watt, porcelain, coal-fired solid impurity particle the like waste, but be not limited only to this class and consider material.
Say further, described permeable filtering layer 4 selects seepy material to make, and includes but are not limited to permeable non-woven fabrics.
Hereafter will describe content of the present invention in conjunction with specific embodiments in detail.It should be noted that the combination of technical characteristic or the technical characteristic described in following embodiment should not be considered to isolated, they can mutually be combined thus be reached better technique effect.
Embodiment 1
Shelter-forest enrichment is transformed ditch device and is assembled in farmland drainage ditch or in low-lying land by the present embodiment, sets up form in conjunction with the farmland discharging-irrigating network of rivers.Concrete steps are as follows:
(1) farmland drainage ditch or low-lying land is utilized to build charge for remittance sedimentation basin ditch 9, as depicted in figs. 1 and 2, both sides are farmland 2 and soil 7, field irrigation canal system is utilized to unite, food processing waste or the breeding wastewater that can produce acid together add in the current of Irrigation Ditch, by means of irrigation water uniform irrigation to the farmland by heavy metal pollution, pouring is implemented to it and melts flushing, then utilize the blind pipe 1 imbedding farmland that the washings in farmland 2 are imported charge for remittance sedimentation basin ditch 9.
(2) enrichment transforms island and is arranged at charge for remittance sedimentation basin ditch 9 central authorities, and be made up of enrichment conversion case 3 single file or plurality of rows, enrichment transforms the trapezoidal cabinet that case 3 is made with ABS engineering plastics,
What wherein enrichment transformed case 3 is trapezoidal inclined plane to water side, and chain junction is vertical plane, and the surrounding that enrichment transforms case 3 is provided with even permeable hole 8, and the aperture of permeable hole 8 is set to 1.0mm, can enter enrichment completely transform in case 3 to make the washing water in charge for remittance sedimentation basin ditch 9.Trapezoidal bottomless large mouth down, having of band kind of plant hole mouth 10 pushes up osculum upward, then transform in case 3 in trapezoidal enrichment and insert more than filtrate to normal water line 30 ~ 40cm At The Height as filter material layer 5, filtrate adopt through the vulcanization bed slag of physical chemical modification, pottery, watt, porcelain, coal-fired solid impurity particle the like waste, in filling process, spray purification bacterium liquid and animal ovum liquid.
(3) on filter material layer 5, lay the permeable non-woven fabrics of one deck as permeable filtering layer 4, leak under preventing earth.
(4) on permeable filtering layer 4, foundation plants the forest of the quantity kind implantation belt soil ball of plant hole 10, then inserts the soil bearing course 6 of earth as forest pressure-bearing.
(5) quantity of kind plant hole 10 that enrichment transforms on the trapezoidal osculum on the band top of case 3 at least arranges more than 3, cave shape is square or circular, the length of side or diameter are 35-110cm, plant the above trees of 2 row, respectively plant two row trees simultaneously in the side slope side, farmland 2 of charge for remittance sedimentation basin ditch 9, form the high forest of fallen leaves and evergreen mixed friendship.
Although give some embodiments of the present invention, it will be understood by those of skill in the art that without departing from the spirit of the invention herein, can change embodiment herein.Above-described embodiment is exemplary, should using embodiment herein as the restriction of interest field of the present invention.
Claims (6)
1. one kind transforms ditch device for the shelter-forest enrichment of removing heavy metals in farmland, it is characterized in that, comprise blind pipe, charge for remittance sedimentation basin ditch, enrichment transforms island and forest, described blind pipe is meshy arrangement in farmland, the sewage of its discharge outlet enters the described charge for remittance sedimentation basin ditch of farmland surrounding respectively, described charge for remittance sedimentation basin ditch is the gutter of digging out around polluted agricultural land edge, described enrichment conversion island is transformed case single row or multiple rows by enrichment and is listed in charge for remittance sedimentation basin ditch central authorities and forms, described enrichment transforms case and is divided into soil bearing course successively from top to bottom, permeable filtering layer and filter material layer, described forest comprises fallen leaves and evergreen water-fast wet arbor.
2. a kind of shelter-forest enrichment for removing heavy metals in farmland transforms ditch device as claimed in claim 1, it is characterized in that, it is trapezoidal cabinet that described enrichment transforms case, described trapezoidal cabinet band top is also bottomless, be trapezoidal inclined plane to water side, chain junction is vertical plane, the large mouth down that described trapezoidal cabinet is bottomless, upward, the top of described trapezoidal cabinet is provided with kind of a plant hole to the osculum on band top.
3. a kind of shelter-forest enrichment for removing heavy metals in farmland transforms ditch device as claimed in claim 1, it is characterized in that, described enrichment transforms case and is made up of corrosion-resistant engineering plastics, rubber or resin material, all arranges permeable hole in its surrounding simultaneously.
4. a kind of shelter-forest enrichment for removing heavy metals in farmland transforms ditch device as claimed in claim 1, it is characterized in that, described forest adopts fallen leaves and the arbor of evergreen mixed friendship, comprises yew, wet-land pine tree, bald cypress, metasequoia, Chi Shan, Manchurian ash, white willow, steamed bun willow, weeping willow, China tree, leaflet Chinese wax, Chinese tallow tree, Chinese ash, fragrant camphor tree, Bischofia javanica Bl, mosquito mother, Mao Shu.
5. a kind of shelter-forest enrichment for removing heavy metals in farmland transforms ditch device as claimed in claim 1, it is characterized in that, the vulcanization bed slag of described filter material layer manager selectionization modification, pottery, watt, porcelain, coal-fired solid impurity particle discarded object.
6. a kind of shelter-forest enrichment for removing heavy metals in farmland transforms ditch device as claimed in claim 1, and it is characterized in that, described permeable filtering layer selects seepy material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510240310.5A CN104801535B (en) | 2015-05-13 | 2015-05-13 | A kind of shelter-forest enrichment conversion ditch device for being used to remove heavy metals in farmland |
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| CN201510240310.5A CN104801535B (en) | 2015-05-13 | 2015-05-13 | A kind of shelter-forest enrichment conversion ditch device for being used to remove heavy metals in farmland |
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| CN104801535A true CN104801535A (en) | 2015-07-29 |
| CN104801535B CN104801535B (en) | 2017-08-08 |
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Cited By (3)
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| CN105344707A (en) * | 2015-09-25 | 2016-02-24 | 天津城建大学 | Forest network enrichment-conversion irrigation and drainage circulating system used for removing heavy metal of strip field |
| CN105945043A (en) * | 2016-07-10 | 2016-09-21 | 中山市绿浪助剂有限公司 | Method for rapidly treating heavy metal pollution of soil |
| CN108636343A (en) * | 2018-05-21 | 2018-10-12 | 天津城建大学 | A kind of reinforcing absorption clinker and preparation method thereof and purposes |
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| US6250237B1 (en) * | 1991-02-04 | 2001-06-26 | Louis A. Licht | Method for using tree crops as pollutant control |
| CN102011379A (en) * | 2010-10-22 | 2011-04-13 | 上海交通大学 | Pollution control method of farmland drainage in plain tidal river network area |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105344707A (en) * | 2015-09-25 | 2016-02-24 | 天津城建大学 | Forest network enrichment-conversion irrigation and drainage circulating system used for removing heavy metal of strip field |
| CN105344707B (en) * | 2015-09-25 | 2018-12-07 | 天津城建大学 | Forest network for removing a field heavy metal is enriched with conversion and fills row's circulatory system |
| CN105945043A (en) * | 2016-07-10 | 2016-09-21 | 中山市绿浪助剂有限公司 | Method for rapidly treating heavy metal pollution of soil |
| CN108636343A (en) * | 2018-05-21 | 2018-10-12 | 天津城建大学 | A kind of reinforcing absorption clinker and preparation method thereof and purposes |
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| CN104801535B (en) | 2017-08-08 |
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Effective date of registration: 20190531 Address after: 300384 Huatian Road, Huayuan Industrial Zone, Nankai District, Tianjin Patentee after: Tianjin Jinshenghui Technology Co., Ltd. Address before: No. 26, Jinjing Road, Xiqing District, Tianjin Patentee before: Tianjin Chengjian University |
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